Weber DCOE factory jetting for Alfa Romeo

Category: Weber twin carbs
August 12, 2009

Giulietta Sprint Veloce
giulia sprint veloce

Engine capacity: 1290 cc
Weber model: 40 DCOE 2
Choke: 29
Auxiliary venturi: 4.50
Main jet: 110
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 200
Accelerator pump jet: 35
Accelerator pump back bleed: 70
Needle valve: 150

1300 GT Junior Super
1300 GT Junior Super

Engine capacity: 1290 cc
Weber model: 40 DCOE 28
Choke: 28
Auxiliary venturi: 4.50
Main jet: 112
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 210
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

Giulia 1600 SS
Giulia 1600 SS

Engine capacity: 1570 cc
Weber model: 40 DCOE 2
Choke: 30
Auxiliary venturi: 4.5
Main jet: 120
Idle jet: 55F11
Emulsion tube: F16
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 70
Needle valve: 150

Giulia 1600 TI Super

Engine capacity: 1570 cc
Weber model: 45 DCOE 14
Choke: 30
Auxiliary venturi: 4.5
Main jet: 120
Idle jet: 55F8
Emulsion tube: F16
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 50
Needle valve: 150

Giulia 1600 Sprint GT

Engine capacity: 1570 cc
Weber model: 40 DCOE 4
Choke: 30
Auxiliary venturi: 4.5
Main jet: 127
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 220
Accelerator pump jet: 35
Accelerator pump back bleed: 50
Needle valve: 150

Giulia 1600 Super

Engine capacity: 1570 cc
Weber model: 40 DCOE 24
Choke: 27
Auxiliary venturi: 4.5
Main jet: 110
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 50
Needle valve: 150

Giulia 1600 Super

Engine capacity: 1570 cc
Weber model: 40 DCOE 33
Choke: 30
Auxiliary venturi: 4.5
Main jet: 120
Idle jet: 50F14
Emulsion tube: F9
Air corrector jet: 200
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

1600 Junior Z, Giulia 1600 Super
2600 sprint coupe

Engine capacity: 1570 cc
Weber model: 40 DCOE 44/55
Choke: 30
Auxiliary venturi: 4.5
Main jet: 117
Idle jet: 50F15
Emulsion tube: F16
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

Giulia 1600 GTV/Spider

Engine capacity: 1570 cc
Weber model: 40 DCOE 27
Choke: 30
Auxiliary venturi: 4.5
Main jet: 117
Idle jet: 50F14
Emulsion tube: F16
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

Giulia 1600 GTA

Engine capacity: 1570 cc
Weber model: 45 DCOE 14
Choke: 30
Auxiliary venturi: 4.5
Main jet: 135
Idle jet: 50F8
Emulsion tube: F16
Air corrector jet: 220
Accelerator pump jet: 35
Accelerator pump back bleed: 50
Needle valve: 150

Giulia 1600 Sprint GTA
Giulia 1600 Sprint GTA

Engine capacity: 1570 cc
Weber model: 45 DCOE 18
Choke: 30
Auxiliary venturi: 4.5
Main jet: 120
Idle jet: 50F8
Emulsion tube: F9
Air corrector jet: 220
Accelerator pump jet: 35
Accelerator pump back bleed: 50
Needle valve: 150

1750 Berlina/ Coupe GT Veloce/ Spider Veloce
1750 berlina

Engine capacity: 1779 cc
Weber model: 40 DCOE 32
Choke: 32
Auxiliary venturi: 4.5
Main jet: 130
Idle jet: 50F8
Emulsion tube: F9
Air corrector jet: 200
Accelerator pump jet: 35
Accelerator pump back bleed: 80
Needle valve: 150

Giulia 1600, Alfetta 1600

Engine capacity: 1570 cc
Weber model: 40 DCOE 106/107
Choke: 30
Auxiliary venturi: 6.0
Main jet: 132
Idle jet: 55F21
Emulsion tube: F41
Air corrector jet: 180
Accelerator pump jet: 30
Accelerator pump back bleed: -
Needle valve: 150

Alfetta 1.6
alfetta 1.6

Engine capacity: 1570 cc
Weber model: 40 DCOE 82/83
Choke: 30
Auxiliary venturi: 6.0
Main jet: 132
Idle jet: 55F21
Emulsion tube: F41
Air corrector jet: 180
Accelerator pump jet: 35
Accelerator pump back bleed: 35
Needle valve: 150

Alfetta 1.8
alfetta 1.8

Engine capacity: 1779 cc
Weber model: 40 DCOE 72/73
Choke: 32
Auxiliary venturi: 4.5
Main jet: 135
Idle jet: 55F17
Emulsion tube: F34
Air corrector jet: 210
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

2000 GT Spider Europe

Engine capacity: 1962 cc
Weber model: 40DCOE 76/77
Choke: 32
Auxiliary venturi: 4.5
Main jet: 135
Idle jet: 55F17
Emulsion tube: F34
Air corrector jet: 210
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

2600 Sprint Coupe
2600 sprint coupe

Engine capacity: 2584 cc
Weber model: 45 DCOE 9
Choke: 36
Auxiliary venturi: 4.5
Main jet: 145
Idle jet: 55F8
Emulsion tube: F16
Air corrector jet: 155
Accelerator pump jet: 45
Accelerator pump back bleed: 40
Needle valve: 200

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